Four new species and new synonymy in Stenocerus Schoenherr, 1826 (Coleoptera, Anthribidae, Anthribinae, Stenocerini) Author Lopes, Marcela Paes De A. M. Author Mermudes, José Ricardo M. text Zootaxa 2018 2018-09-11 4472 3 471 488 journal article 29445 10.11646/zootaxa.4472.3.3 e347cf11-d189-4eea-830c-37d8d50c9342 1175-5326 1440263 095788F7-768D-4D3B-9453-9DB2E321CDB0 Stenocerus fratris sp. nov. ( Figs. 15–28 ) Etymology: Latin, fratris = brother, allusive to the great resemblace with S. angulicollis Jekel, 1855 and S. varipes Fahraeus, 1839 . Diagnosis: Rostrum slightly grooved longitudinally, lacking median carina; lateral carinae evident. Prothorax with antebasal carina rounded at middle third, oblique to apex; lateral carina elongate, semi-curve and slightly protruding before middle. Pronotum elevated at middle, with three circular areas arranged transversely, clothed by black-brownish scales. Elytra with checkered pattern on interstriae 1, alternated black spots at median third arranged obliquely on interstriae 3, 4, 5 and 7, almost forming a stripe; at apical third minor black spots on interstriae 3, 5 and discreetly on interstria 7. Mesosternal process feebly convex at anterior margin, convergent sides, posterior margin rounded. Description: Male ( Figs. 17–28 ). Integument reddish-brown. Dorsal vestiture: rostrum with fine, short and decumbent light-brown scales intermingled yellowish and pale scales; frons, each side of ocular margin, with narrow yellow stripe, formed by short and decumbent scales; antennomeres III–XI ( Fig. 19 ) with fine, elongate, erect yellowish setae throughout each antennomeres; VIII and club (IX–XI) with dense light brownish pubescence; pronotum and elytra with moderate dense scales of variegated colours (yellowish, pale, and light to blackbrownish); pronotum with three circular areas clothed with black-brownish scales, arranged transversely at medial elevation, each side slightly anterior; scutellum with white, dense and short pilosity; elytra ( Fig. 23 ) with checkered pattern on interstriae 1 alternated; black spots at median third arranged obliquely on interstriae 3, 4, 5 and 7, almost forming stripe; at apical third minor black spots on interstriae 3, 5 and discreetly on interstria 7; pygidium with brownish scales. Ventral vestiture: black-brownish; sides of pro- and mesothorax and femora with minute yellowish spots; ventrites with yellowish and irregular spots at sides, near distal margin; tibiae with discrete annular yellow-pale stripe at median third; tarsomere I with dense pale-yellow scales; II brownish. Head slightly microcorrugate. Rostrum ( Fig. 17 ) microcorrugate, 1.8x longer than wide at base, slightly grooved longitudinally; lacking median carina; lateral carinae evident; apical margin notched, angulate at middle. Sides of rostrum with distance between scrobe and eye ( Fig. 18 ) subequal to maximum lateral width of eye; ventrally with median carina, lacking fovea. Mentum glabrous, with apical margin subtruncate. Antennae exceeding middle third of pronotum; scape stout; antennomere II cylindrical and thickened, with apex wider than base, almost twice shorter than III; III–XI depressed dorsally, slightly expanded at apex; III the longest; IV slightly shorter than III; V–VIII weakly decrease in length; club with IX–XI subequal in length; XI apical margin acute. Prothorax ( Figs. 20–21 ) about 1.5x wider than long. Pronotum ( Fig. 20 ) with discrete depression, but large, deeper parallel to central transverse elevation; carina antebasal, rounded at middle third; slightly convergent from antebasal carina forward anterior margin; lateral carina ( Fig. 21 ) elongate, semi-curved and slightly protuding before middle. Prosternum subglabrous and corrugate; prosternal process not exceeding distal margin of cavity I. Mesosternal process ( Fig. 22 ) feebly shorter than width of mesocavity, feebly concave at anterior margin; sides convergent and prominent and rounded posterior margin. Scutellum subsquare, with parallel sides, broadly rounded at apex. Elytra ( Fig. 23 ) short, about 1.3x longer than wide across humeri, with parallel sides, convergent at apical third; lacking tubercles. FIGURES 15–16. Stenocerus fratris sp. nov. , holotype male from Santa Maria de Jetibá (Espírito Santo): 15, dorsal; 16, lateral. Abdomen ( Fig. 24 ): ventrites I–IV feebly depressed at disc; ventrite V 1.2x longer than IV, apical margin weakly concave. Pygidium ( Fig. 25 ) with length of apical portion subequal to basal half; apical margin broadly rounded. Terminalia ( Figs. 26–27 ): tergite VIII ( Fig. 26 ) transverse, longer than wide, sides slightly convergent from base to apex, apical margin weakly rounded, little sclerotized near sides and apex, with moderately long setae; sternite VIII membranous, transverse, with lateroapical lobes not well-defined, pigmented, with moderately long setae; sternite IX with apodeme 6.5x longer than arms. Tegmen ( Fig. 27 ) with length of apodemes slightly shorter than sclerotized ring, with basal margins pigmented, rod 2.2x longer than arms; sclerotized-ring with pre-apical margin deeply sinuous and sclerotized; parameres fused, sides slightly convergent; apical margin truncate, with moderate dense and long setae; strongly sinuous (lateral view). Penis ( Fig. 28 ) few curve and elongate, body 1.5x the length of apodemes; bridge between apodemes weakly sclerotized at proximal margin; tectum membranous, slightly pigmented, about twice longer than wide, with sides weakly sclerotized, convergent to apex, this subrounded; pedon continuous with apodemes, these gradually sclerotized from base to apex; subtruncate at apex. Internal sac feebly shorter than apodemes, almost 2.3x shorter than penis, spiculate ventrally and dorsally at proximal area. FIGURES 17–28. Stenocerus fratris sp. nov. , holotype male: 17, head, dorsal view; 18, head, lateral view; 19, antenna; 20, pronotum; 21, prothorax, lateral; 22, mesosternal process; 23, elytra, dorsal; 24, abdomen, ventral; 25, pygidium, dorsal; 26, tergite and sternite VIII, ventral; 27, tegmen, dorsal and lateral; 28, penis, dorsal and lateral. Type material: Holotype male from Brazil , Espirito Santo , Santa Maria de Jetibá , XI/ 1958 , 800 m; Stenocerus fratris sp. nov. ; Holotype male, Lopes & Mermudes det. 2017 ( DZUP )—dissected. Remarks: Stenocerus fratris sp. nov. ( Figs. 15–16 ) has features of both S. varipes Fahraeus, 1839 and S. angulicollis Jekel, 1855 , but it differs by (differences in parentheses): 1) integument reddish-brown (either S. angulicollis and S. varipes are dark black-brownish); 2) rostrum narrow and elongate, lacking median carina, grooved longitudinally, but with evident lateral carina ( S. angulicollis has rostrum similar in length but it had elevated median carina; S. varipes , on the other hand, has rostrum feebly shorter and broader, lacking median carina); 3) prothorax with antebasal carina rounded at middle third ( S. varipes and S. angulicollis are broadly rounded); 4) elytral vestiture with distinct checkered pattern on interstriae 1, alternated black spots at median third arranged obliquely on iterstriae 3, 4, 5 and 7, almost forming a stripe; at apical third minor black spots on interstriae 3, 5 and discreetly on 7 (interstriae 1 similar in both species, but lacking black spots at median third); 5) mesosternal process ( Fig. 22 ) feebly shorter than width mesocavity, feebly convex at anterior margin; prominent and rounded posterior margin ( S. varipes and S. angulicollis have mesosternal process as wide as width mesocavity, broadly convex at anterior margin and posterior margin, which evidently not prominent).